| 摘要 |
A tracheal tube is formed from a piece of tubing having a circular cross-section, and includes a first, slightly curved leg (2) which is intended for insertion into the patient's trachea, through the mouth or nose of the patient and the patient's larynx. The tube also includes a second leg (1) which forms substantially a right angle with the first leg (2) and extends from the patient's throat out through the patient's mouth or nose. A section (5) of the first leg (2) intended to extend through the patient's larynx has an elongated, substantially pear-shaped or egg-shaped cross-section (4), with the large axis lying in the plane containing the longitudinal axes of the tube legs (1, 2). The more pointed end of said cross-section (4) faces rearwardly, i.e. towards the convex side of the main curvature of the L-shaped tube. <IMAGE> |
